Today I tried to reproduce the issue. Google resolved the issue. Now, when you create new calendar event, populate the What field and then click edit event, Where event is not populated with What value, and there is no link to Google maps. I told you, Google is very fast in resolving issues in their applications. Event that I created while I was reproducing the issue, still has link to Google maps. A little bit strange filling, like in Georges Orwell's 1984. “He who controls the past controls the future. He who controls the present controls the past.” I am going to check the Google calendar past snapshot, screen cast with issue manifestation. Maybe Google updated screen cast as well?